Ok, so Cartman gets arrested at the end for 2 months???? Who wants to see an episode about those two months?????

They've already done an episode with Cartman in juvie in "Cartman's Silly Hate Crime" back around season 3 or 4. And we know he's been arrested at least a few other times (Casa Bonita, The Poor Kid). Quite the impressive record to obtain considering they are only ten as of about season fifteen.